When Work Gets on Your Nerves

Employees without much say at workare more likely to develop carpal tunnel syndrome.

By Amelia Levy, published on July 01, 1998 - last reviewed on August 30, 2004

It's called an occupational hazard because it's been linked to the use of a keyboard. But your odds of encountering carpal tunnel syndrome may hinge more on your rung on the office ladder.

The nerve disease, which causes a feeling of numbness or burning in the hands and wrists, has long been tied to sustained typing on a computer keyboard. But a 1998 study led by Boston University professor of epidemiology David Nordstrom, Ph.D., found no such connection.

Instead, he found that people reporting the least influence over their work had almost three times the risk of developing carpal tunnel syndrome as did those with the most influence.

Obesity, non-participation in sports, and having a close relative with the condition all doubled the risk of developing the syndrome, as did a previous diagnosis of a musculoskelatal condition like lupus or arthritis.

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Nordstrom cautioned that his findings are preliminary but offered several possible explanations for the link between the wrist disorder and autonomy in the office.

o The stress of taking orders may increase muscle tension, putting a strain on bones and nerves.

o Initial episodes of pain may trigger a chronic nervous system dysfunction in those with lots of work but little independence.

o People under stress may simply be more sensitive to their symptoms and more likely to report them to doctors.